branch Attitude Adjustment

git-svn-id: svn://svn.openwrt.org/openwrt/branches/attitude_adjustment@33625 3c298f89-4303-0410-b956-a3cf2f4a3e73

2 files changed, 251 insertions, 0 deletions

diff --git a/package/6to4/Makefile b/package/6to4/Makefile
new file mode 100644
index 000000000..f29571d86
--- /dev/null
+++ b/package/6to4/Makefile
@@ -0,0 +1,42 @@
+#
+# Copyright (C) 2010-2012 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=6to4
+PKG_VERSION:=11
+PKG_RELEASE:=1
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/6to4
+  SECTION:=ipv6
+  CATEGORY:=IPv6
+  DEPENDS:=+kmod-ipv6 +kmod-sit
+  TITLE:=IPv6-to-IPv4 configuration support
+  MAINTAINER:=Jo-Philipp Wich <xm@subsignal.org>
+  PKGARCH:=all
+endef
+
+define Package/6to4/description
+Provides support for 6to4 tunnels in /etc/config/network.
+Refer to http://wiki.openwrt.org/doc/uci/network for
+configuration details.
+endef
+
+define Build/Compile
+endef
+
+define Build/Configure
+endef
+
+define Package/6to4/install
+	$(INSTALL_DIR) $(1)/lib/netifd/proto
+	$(INSTALL_BIN) ./files/6to4.sh $(1)/lib/netifd/proto/6to4.sh
+endef
+
+$(eval $(call BuildPackage,6to4))
diff --git a/package/6to4/files/6to4.sh b/package/6to4/files/6to4.sh
new file mode 100755
index 000000000..3a616f675
--- /dev/null
+++ b/package/6to4/files/6to4.sh
@@ -0,0 +1,209 @@
+#!/bin/sh
+# 6to4.sh - IPv6-in-IPv4 tunnel backend
+# Copyright (c) 2010-2012 OpenWrt.org
+
+[ -n "$INCLUDE_ONLY" ] || {
+	. /lib/functions.sh
+	. /lib/functions/network.sh
+	. ../netifd-proto.sh
+	init_proto "$@"
+}
+
+find_6to4_prefix() {
+	local ip4="$1"
+	local oIFS="$IFS"; IFS="."; set -- $ip4; IFS="$oIFS"
+
+	printf "2002:%02x%02x:%02x%02x\n" $1 $2 $3 $4
+}
+
+test_6to4_rfc1918()
+{
+	local oIFS="$IFS"; IFS="."; set -- $1; IFS="$oIFS"
+	[ $1 -eq  10 ] && return 0
+	[ $1 -eq 192 ] && [ $2 -eq 168 ] && return 0
+	[ $1 -eq 172 ] && [ $2 -ge  16 ] && [ $2 -le  31 ] && return 0
+
+	# RFC 6598
+	[ $1 -eq 100 ] && [ $2 -ge  64 ] && [ $2 -le 127 ] && return 0
+
+	return 1
+}
+
+set_6to4_radvd_interface() {
+	local cfgid="$1"
+	local lanif="${2:-lan}"
+	local ifmtu="${3:-1280}"
+	local ifsection=""
+
+	find_ifsection() {
+		local net
+		local cfg="$1"
+		config_get net "$cfg" interface
+
+		[ "$net" = "$lanif" ] && {
+			ifsection="$cfg"
+			return 1
+		}
+	}
+
+	config_foreach find_ifsection interface
+
+	[ -z "$ifsection" ] && {
+		ifsection="iface_$sid"
+		uci_set_state radvd "$ifsection" "" interface
+		uci_set_state radvd "$ifsection" interface "$lanif"
+	}
+
+	uci_set_state radvd "$ifsection" ignore            0
+	uci_set_state radvd "$ifsection" IgnoreIfMissing   1
+	uci_set_state radvd "$ifsection" AdvSendAdvert     1
+	uci_set_state radvd "$ifsection" MaxRtrAdvInterval 30
+	uci_set_state radvd "$ifsection" AdvLinkMTU        "$ifmtu"
+}
+
+set_6to4_radvd_prefix() {
+	local cfgid="$1"
+	local lanif="${2:-lan}"
+	local wanif="${3:-wan}"
+	local prefix="${4:-0:0:0:1::/64}"
+	local vlt="${5:-300}"
+	local plt="${6:-120}"
+	local pfxsection=""
+
+	find_pfxsection() {
+		local net base
+		local cfg="$1"
+		config_get net  "$cfg" interface
+		config_get base "$cfg" Base6to4Interface
+
+		[ "$net" = "$lanif" ] && [ "$base" = "$wanif" ] && {
+			pfxsection="$cfg"
+			return 1
+		}
+	}
+
+	config_foreach find_pfxsection prefix
+
+	[ -z "$pfxsection" ] && {
+		pfxsection="prefix_${sid}_${lanif}"
+		uci_set_state radvd "$pfxsection" ""                   prefix
+		uci_set_state radvd "$pfxsection" ignore               0
+		uci_set_state radvd "$pfxsection" interface            "$lanif"
+		uci_set_state radvd "$pfxsection" prefix               "$prefix"
+		uci_set_state radvd "$pfxsection" AdvOnLink            1
+		uci_set_state radvd "$pfxsection" AdvAutonomous        1
+		uci_set_state radvd "$pfxsection" AdvValidLifetime     "$vlt"
+		uci_set_state radvd "$pfxsection" AdvPreferredLifetime "$plt"
+		uci_set_state radvd "$pfxsection" Base6to4Interface    "$wanif"
+	}
+}
+
+proto_6to4_setup() {
+	local cfg="$1"
+	local iface="$2"
+	local link="6to4-$cfg"
+
+	local mtu ttl ipaddr adv_subnet adv_interface adv_valid_lifetime adv_preferred_lifetime
+	json_get_vars mtu ttl ipaddr adv_subnet adv_interface adv_valid_lifetime adv_preferred_lifetime
+
+	( proto_add_host_dependency "$cfg" 0.0.0.0 )
+
+	local wanif
+	if ! network_find_wan wanif; then
+		proto_notify_error "$cfg" "NO_WAN_LINK"
+		return
+	fi
+
+	[ -z "$ipaddr" ] && {
+		if ! network_get_ipaddr ipaddr "$wanif"; then
+			proto_notify_error "$cfg" "NO_WAN_ADDRESS"
+			return
+		fi
+	}
+
+	test_6to4_rfc1918 "$ipaddr" && {
+		proto_notify_error "$cfg" "INVALID_LOCAL_ADDRESS"
+		return
+	}
+
+	# find our local prefix
+	local prefix6=$(find_6to4_prefix "$ipaddr")
+	local local6="$prefix6::1"
+
+	proto_init_update "$link" 1
+	proto_add_ipv6_address "$local6" 16
+	proto_add_ipv6_route "::" 0 "::192.88.99.1"
+
+	proto_add_tunnel
+	json_add_string mode sit
+	json_add_int mtu "${mtu:-1280}"
+	json_add_int ttl "${ttl:-64}"
+	json_add_string local "$ipaddr"
+	proto_close_tunnel
+
+	proto_send_update "$cfg"
+
+	[ -f /etc/config/radvd ] && /etc/init.d/radvd enabled && {
+		local sid="6to4_$cfg"
+
+		uci_revert_state radvd
+		config_load radvd
+
+		adv_subnet=$((0x${adv_subnet:-1}))
+
+		local adv_subnets=""
+
+		for adv_interface in ${adv_interface:-lan}; do
+			local adv_ifname
+			network_get_device adv_ifname "${adv_interface:-lan}" || continue
+
+			local subnet6="$(printf "%s:%x::1/64" "$prefix6" $adv_subnet)"
+
+			logger -t "$link" " * Advertising IPv6 subnet $subnet6 on ${adv_interface:-lan} ($adv_ifname)"
+			ip -6 addr add $subnet6 dev $adv_ifname
+
+			set_6to4_radvd_interface "$sid" "$adv_interface" "$mtu"
+			set_6to4_radvd_prefix    "$sid" "$adv_interface" \
+				"$wanif" "$(printf "0:0:0:%x::/64" $adv_subnet)" \
+				"$adv_valid_lifetime" "$adv_preferred_lifetime"
+
+			adv_subnets="${adv_subnets:+$adv_subnets }$adv_ifname:$subnet6"
+			adv_subnet=$(($adv_subnet + 1))
+		done
+
+		uci_set_state network "$cfg" adv_subnets "$adv_subnets"
+
+		/etc/init.d/radvd restart
+	}
+}
+
+proto_6to4_teardown() {
+	local cfg="$1"
+	local link="6to4-$cfg"
+
+	local adv_subnets=$(uci_get_state network "$cfg" adv_subnets)
+
+	grep -qs "^ *$link:" /proc/net/dev && {
+		[ -n "$adv_subnets" ] && {
+			uci_revert_state radvd
+			/etc/init.d/radvd enabled && /etc/init.d/radvd restart
+		}
+	}
+}
+
+proto_6to4_init_config() {
+	no_device=1
+	available=1
+
+	proto_config_add_string "ipaddr"
+	proto_config_add_int "mtu"
+	proto_config_add_int "ttl"
+	proto_config_add_string "adv_interface"
+	proto_config_add_string "adv_subnet"
+	proto_config_add_int "adv_valid_lifetime"
+	proto_config_add_int "adv_preferred_lifetime"
+}
+
+[ -n "$INCLUDE_ONLY" ] || {
+	add_protocol 6to4
+}